Mantle-sewing machine.



S. UOHN.

MANTLE SEWING MACHINE.

APPLIOATION FILED JAN. 27, 1910.

COLUMBIA PLANQGRAPH co.,\\'/\SH|NGTON, D. c.

Avv

S. COHN.

MANTLE SEWING MACHINE.

n APPLICATION FILBD-JAN. 27, 1910.

Patented Dec. 3, 191,2.v

4 SHEETS-SHEET 2.

wnNEssEs NVENTOR ATTORNEY CGLUMBIA PLANOGRAPH c0 WASHINGTON. D. c.

S. (JOHN.

MANTLE SEWING MACHINE. APPLICATION FILED JAN. 27, 1910.

1 ,046,269, Patented Dec. 3, 1912.

4 SHEETS-SHEET 3.

. w lo WITNESSES mvENToR Qmdwwwu BY mzm ATTORNEY COLUMNA FLANQGRAPHco.,\VASHlNuToN. D..c.

" a sains PA'iEN onirica.

SAMUEL COI-IN, 0F NEW YORK, N. Y., ASSIGNOR, BY IVIESNE ASSIGNMENTS, T0MANTLE MACHINERY AND PATENTS COMPANY, A CORPORATION 0F NEW YORK.

MANTLE-SEWING MACHINE.

Specification of Letters Patent.

Patented Dec. 3, 1912.

Application iled January 27, 1910. Serial No. 540,300.

To all whom it may concern:

Be it known that I, SAMUEL Corin, a citizen of the United States, and aresident of the city, county, and State of New York, have invented a newand useful Improvement in Mantle-Sewing Machines, of which the followingis a specification.

l-leretofore mantle sewing machines have been made and used by me formany years in which one end of a stocking is gathered in two sets ofplaits and parallel needles are then run through the said plaits andwhen at the limitof their movements, threading devices pass through theeyes of the needles and engage the ends of the shirring string which areheld by the hand of an operator. The threaders are then withdrawn andcarry the ends of the string with them thereby threading the needles.The needles are then returned to their initial positions and in soldoing draw the shirring string after them and the bight of the stringengages a lug which causes it to be held fast and t-he string is thenwithdrawn from the needle eyes just before the needles reach theirinitial posi tions. From the foregoing brief description it is obviousthat the shirring strings are each cut to their proper lengths beforebeing used by the operator in the machine.

The object of my invention is to make the action of the machine entirelyantomatic as to the shirring string and I therefore apply an attachmentto my said inachine which is described below and it is used thereon withsubstantially no change in the mechanism of the machine except thoseincident to the new function.

For a more particular description of my invention, reference is to behad to the accompanying drawings forming a part hereof, in which,

Figure 1 is a reai end elevation of the machine provided with myimprovements. Figs. 2, 3, and 3a are detailed views showing parts of thegripping mechanism. Fig. 4 is a plan view of a machine provided with myimprovement. Fig. 5 is a side elevation of my machine. Fig. 6 is a sideelevation Aof my improvement. Figs. 7, 8, and 9 show the placingmechanism for putt-ing the ends of the shirring string in a suitableposition by being engagedA by the threaders. Unnecessary details areomitted. Figs. 10 and is transmitted through an interrupte 11 show thecutting mechanism. Figs. 12 and 13 show the looping mechanism in variouspositions.

Throughout the lvarious views of the drawings, similar referencecharacters designate similar parts.

vThe sewing machine to which my improvement is attached in theembodiment herein shown and described is the one generally used by meand covered in my United States Patent numbered 798,090 and otherpatents, so that only a general description thereof is necessary. Thesewing machine is provided with a base 1 on which are placed a number ofstandards 2, 3, and 4 which v carry the main shaft 5 of the machine. The

machine derives its power from a lever 6 at the forward end of the shaft5, and ower gear 7 which is fixed thereon to a second inter` rupted gear8 which is secured to a stud shaft 9 journaled in a suitable pedestal10. The gears 7 and 8 are bevel gears. The stud shaft 9 also carries anarm 11 which is bifurcated at its upper end and provided with slots 12,the walls of which engage a pin 13 on the needle block 14 which carriesthe needles 15 in the convent-ional manner. The needle block 14 runs onsuitable guides 16 from the support 2 to the support 3. The needles 15also run through a suitable guide 17 which is mounted on bars 16.

The shaft 5 carries two cams 18 and 19 placed in the front and rear ofthe uprights 3 and 4 and these cams are each engaged by pins 20 whichrun transversely of the side jaws 21, which are pivoted between theuprights 3 and 4 on suitable fulcrums 22. The side jaws intermesh withthe fixed center jaw 23, and the center jaw 23 and side jaw 21 are eachprovided with suitable needle slots 24 through which the needles 15 areadapted to pass. The shaft 5 also carries a cam 26 which engages a pin27 on a slide 28 which is pivotally connected to two levers 29 and 30that carry the threaders 31.

The foregoing is a brief description of the old and well-known type ofmachine which I have used for some years, and this forms no part of theinvention covered by this application. It is shown in detail onlybecause my improvement, which is attached thereon, would be inoperativeexcept in connection with a machine of this type, and my improvementsare so intimately connected that they cannot be understood except inconnection with such a machine, although it is obvious that it couldalso be used on many other machines of the same type. This improvementis provided with a standard 35 which carries a greater part of themechanism involved and the main driving shaft 5 is extended to carry twoadditional cams 36 and 37, respectively. Both the cams 36 and 37 aredouble cams, that is, each controls the operation of two levers so thatfour additional levers are driven by the shaft 5 through said cams. Thisis easily accom plished because the said lever oscillates through anangle of about 120 degrees, so that it is possible to arrange so thatthe movement of one lever does not in any way interfere with themovement of another.

The standard 35 may be of any suitable shape and is preferably mountedon a laterally extending base 38 which is secured to the base 1 by meansof suitable screws 39. It is preferably located as shown, and ispreferably made of substantially the outline indicated, although it maybe varied in these respects, if desired.

One part of the cam 36 engages a pin 40 carried on a lever 41 which isfulcrumed at 42 on a bracket 43, secured by screws 44 to the upright 35.This lever 41 is kept in proper relation to the cam 36 by means of acoiled spring 45 secured at one end to a screw 46 fixed in the upright35, and at its other end to a screw 47 xed in the lever 41. Thisconstruction forces the pin 40 into continual contact with the properpart of the cam 36 which cam is shaped substantially as shown in Fig. 1.The free end of the lever 41 is provided with a suitable pivot 48 towhich is pivotally connected a link 49 in the conventional manner. Theupper end of this link 49 is similarly connected to a pin 50 mounted ona lever 51 fulcrumed at 52 in the upright 35 and slotted at its otherend with a slot 53 to engage the screw or similar device 54 in a slide55 that runs between suitable guides 56 which are secured to the upright35 by means of screws 57 or in any other suitable manner.

The slide 55 has a hook 58 at its lower end, the point of which isturned toward the front of the machine, that is toward the lever 6, andslidably mounted on this slide and on this hook 58 is a detent 59 whichis normally forced into engagement with the shirring string and the hook58 by means of a coiled spring 60 mounted on the slide 55 and secured atone end to a pin 61 extending from said slide, and at its other end to apin 62 running from said detent 59. At the lower end of its movement,the detent 59 is removed from the hook 58 by means of a bail 63 xed inthe center jaw 23 of the machine. The cam 36 also has a portion whichengages Ya pin 64 on a lever 65 fulcrumed at 66 on a pivot secured tothe upright 35. The other end of this lever 65 is pivotally connected toa pivot 67 that engages a vertical rod 68 with a pivotal connection. Acoiled spring 69 rests against a pin 70 at its lower end and at itsupper end against a guide 71 thatis secured to the upright 35 andsurrounds the rod 68 so that by the pressure of the spring 69, the pin64 is kept against the cam 36.' The upper end of the rod 68 is pivotallyconnected by a suitable pivot 72 to a bell-crank lever 73 fulcrumed on apin 74 which is fixed in the upright 35. In Fig. 1 the upper end of thebell-crank lever 72 is broken away so as to more clearly reveal thestructure but is completely shown in Figs. 2 and 3. As will be seen fromthis, the upper end of the lever 73 has a branch 75 on which is secureda smaller gripper 76A which is adapted to have its free end pressedagainst a projection running laterally from the other branch 77 whenforced toward this projection by means of a pin 7 8a and a fixed cam 78which is suitably mounted in the upright 35, the object being to causethe said projection and the spring 76 to grip an asbestos cord 79, thatconstitutes a shirring string,

with a gentle pressure when the projecting end 77 is moved toward theneedles and thereby give the cord 79 the requisite movement to enable itto be engaged by another gripper hereinafter described. The cord 79 iswound in any suitable length upon a spool 80 which turns on a suitablesupport 81 secured to the upright 35 and this cord 79 runs throughsuitable guides 82 which are also fixed in said upright 35. As many ofthese guidesy 82 may be employed as desired.

The cam 37 engages a pin 83 mounted on a bell crank lever 84 which isfulcrumed at 85 on a fulcrum that is fixed in a bracket 86 secured tothe upright 35 by means of suitable screws 87. As the cam 37 movesclockwise the pin 83 is then actuated and not when movinganti-clockwise, a switch cam is employed. The rear face of the cam 37 ispro-vided with a projection 88, secured by suitable screws 89, or othermeans. The outer end of the projection 88 is provided with a spring 90which presses against a small and pivoted lifter 91 which is pivoted at92 in said arm. When moving clockwise the lifter 91 raises the pin 83but when moving anti-clockwise, the pin 83 gets under the lifter 91 andrises against the pressure of the spring 90 so that the pin 83 is raisedonly once for every complete throw of the lever 6. In other words, thelever 84 operates only half as often as the lever 6 above described.

The free end of the bell-crank lever 84 is pivotally connected with avertically disposed rod 93 by means of a suitable pivotal connection 94and this rod 93 runs through a suitable guide 95 on which is a coiledspring 96 that surrounds said rod 93 and the upper end of the spring 96presses against the pin 97 fixed in said rod 93 so that the pin 83 isalways pressed into proper relation with the cam 37. The upper end ofthe rod 93 runs to acrank pin 98 on a crank 99 that runs from a shaft100 to which it is secured. The shaft 100 is journaled in a suitablebracket 101 which is fixed to the upright 35 by means of suitable screws102. This bracket 101 has fixed thereon a suitable disk 103 throughwhich the shaft 100 is passed and the extreme end of this shaft 100 isprovided with a second disk 104. Both the disks 103 and 104 are providedwith registering slots 105 which are separated. These slots do notregister at all times but do register always except when the pin 83 islifted by the` lifter 91, in the manner described above, so that thedisk 104 has a movement with respect to the disk 103. The disks 103 and104 might be regarded as shears which shear the cord 79 at theperiodical intervals required from time to time. The disks 103 and 104are held in proper relation by means of a coiled spring 106 mounted onthe shaft 100 and pressing against the bearing 101 and also against thepin 107 fixed in said shaft 100. The cam 37 is also engaged by asuitable pin 108 carried by a bent lever 109 which is fulcrumed at 110on a pin which is secured to a bracket 111 which is secured to thesupport for the center jaw 23 by suitable screws 112. rl`he upper orfree end of the lever 109 is slotted at 113 and engages a pin 114 xed ina slide 115 that runs between suitable guides 116 which are secured tothe support of the center jaw 23 by means of suitable screws 117.

The pin 108 is kept in proper contact with the cam 37 by means of asuitable coiled spring 118 that connects the lever 109 with a screw 119fixed in the projection 111 as shown in Fig. 1. The slide 115 runs toand from the needles under the infiuence of the spring 118 and cam 37and pin 108 and one limit of its movement is close to the disk 104 andthe other limit is a little beyond that which is shown in Fig. 1. InFig. 1 the mechanism as shown is placed with the lever 6 though about 30degrees from its initial position. The end of the slide 115 next theneedles is provided with a flat spring 120 on its upper edge and aspring dog 121 similar to the spring gripper 76. In its lower edge thespring 121 has its free end on a cam 122 which is fixed to the support35 by means of suitable screws 123 or in any other suitable manner. Whenthe lever 6 is in its initial position and the fingers 121 and 120 arein the position indicated by dotted lines in Fig. 1 the asbestos cord 79is first fed forward by the mechanism on the bell crank 73, abovedescribed, and it is then grasped by the said fingers 120 and 121 anddrawn promptly across the machine so that the said thread will beengaged by the hook 58 as soon as the. same descends to the level of thethread. When the hook 58 is at the right place it engages the thread 79and withdraws still engaging said thread and continues to withdraw whileengaging said thread until near the upper limit of its movement, whenthe slide 115 is withdrawn to its extreme limit and the cam 122 permitsthe separation of the fingers 120 and 121 and simultaneously with thisseparation the disks 104 and 103 coperate together to sever the cord 79which is then supported by the hook 58 alone and the gentle pressure ofthe detent 59 against said cord. The movements are so timed and themechanism so proportioned that the cord will hang from said hook inequal lengths on each side and between the horizontally disposed andparallel portions of the bail 63 under which the cord is drawn when thehook 58 carries it for the first time.

The mechanism which causes the threaders 31 to engage the loose ends ofthe cords 79 after being separated as above described is as follows. Thearm 29 at its upper end is provided with a lever 124 suitably fulcrumedon a suitable screw 125 and held in contact with a cam 126 fixed to theupright 35 by a. screw 127 by means of a coiled spring 128 on said screw125, one end of coiled spring pressing against said lever 124 and theother end against a portion of said screw so the rear end of lever 124is kept in constant contact with the cam 126 or with the upright 35adjacent to said cam. The purpose of this lever 124 is to force the endsof the cord 79 into a position where they will be engaged by thethreader 31 after passing through the eyes of the needles 15. If desiredthe guides 56 may have a finger 129 secured thereon by means of suitablescrews 130, as shown in Fig. 1 which finger engages t-he detent 59 atthe upper limit of this movement and forces the same to posiy tively andfirmly press the cord 79 against the hook 58 whereby all movement of thecord 79 on the hook 58 is prevented.

Operation: From the foregoing the operation of my improved device willbe readily understood: Assuming the machine to be in the condition inwhich it is shown in Fig. 4, the lever 6 is thrown over in theconventional manner. The needles 15 pass thro-ugh the mantle while it isplaited between the center jaw 23 and the side jaws 21 and then thet-hreaders 31 pass through the eyes of the needle in precisely the samemanner as setforth in my said patent and in precisely the same mannerthat my machines have p fore the operator has taken 'an asbestos stringof the correct length and held the ends where the threaders 31 couldengage them and draw them through the eyes of the needles. My improveddevice does automatically what has heretofore been done by hand. Thecord 7 9 is unwound from the spool 80 as fast as desired and is engagedby the gripper 76 and shoved forward through the notches under thecutting shears to the gripper 121 where it is engaged and drawnsuiiciently far to be engaged by the hook 58 when at the lower limit ofits movement. 'Ihe hook 58 is then withdrawn and the gripper 121 holdsfast while the gripper 76 is loosened so that the hook 58, while rising,encounters no resistance of any consequence from the asbestos cord whichmoves freely through the guide 82 and the notches 105 of the shears103-104- Finally the hook 58 rises to the upper limit of its movementand just before it reaches the same the detent 59 is engaged by the arm129 and forced against a cord so as to hold the same on the hook 58. Thegripper 121 then retires slightly and releases the end of the cord andsimultaneously with this the shears act so as to sever the cord and itthen hangs with equally long ends at each side of the hook 5S and fromthis hook. While so hanging the ends are engaged by the threaders 31 andthese threaders draw the ends through their respective needles 15precisely as was done in the old machines where the shirring string washeld by the hand of the operator while its ends were acted upon by thethreaders. After the threaders have returned through the eyes of theneedles and drawn the cord with them, as above described, the needlesretreat and draw the asbestos cord after them and thereby shirr themantle. Simultaneously with the withdrawing of the needles 15 the hook58 is lowered to a position slightly above that shown in Fig. 1 andsutliciently low to enable the shirring string to be withdrawn from thehook without interference when the mantle is returned from the centerfolder 28. A second mantle may be then placed in position and may beoperated in the same manner and this operation may be repeatedindefinitely. In this description of the operation nothing has been saidof the cams 36 and 37 and the levers and other mechanism operatedthereby. It is believed that such a description is unnecessary in viewof the fact that the operation of each individual sub-combination hasbeen described abo-ve and a repetition of this description would notelucidate the matter.

Vhile I have shown and described one embodiment of my invention, appliedin one type of my machine, it is not restricted to the form shown anddescribed herein, norV to this one type of machine, but may be usedVwherever applicable `and 'is broad enough to cover all structures whichcome within the scope ofthe annexed claims.

What I claim is:

1. In a machine of the class described, means for folding a mantle,parallel needles, means for passing said parallel needles through thefolds of said mantle, means for cutting off a predetermined length of ashirring string, and automatic means for passing the ends of said stringrespectively through the eyes of said needles.

2. In a machine of the class described, mantle folding means, needles,means for passing said needles through the folds of the mantles, meansfor feeding a shirring string, and means for severing the same intopredetermined lengths, and means for automatically passing each endrespectively of the severed portion in a longitudinal direction throughthe eye of one of said needles.

3. In a machine of the class described, means for folding` a mantle,needles, and means for passing said needles through the folds of themantle, threaders adapted to pass through the eyes of said needles,means for feeding an asbestos cord to a cutting mechanism, means fordrawing said'cord through said mechanism, a hook for engaging said co-rdwhile its end is held by said last mentioned gripping mechanism andmeans for elevating said hook, means for causing said cutting mechanismto operate to sever the cord, the means for causing the ends of thesevered portion of said cord to engage said threaders and be drawn bythe same through the eyes of the needles and means for causing said hookto descend.

4L. In a machine of the class described, a hook and means for mountingthe same so that it `has a reciprocating movement, means for passing anasbestos cord at right angles to the direction of movement 'of said hookand so as to be engaged by said hook, means for severing said cord andmeans for pressing said cord against said hook.

5. In a machine of the class described, a hook and means for mountingthe same so that it has a reciprocating movement, means for passing acord at an angle to the direction of movement of said hook, so that saidcord may be engaged by said hook, means for severing said cord, meansfor causing the ends of said cords to hang in a predetermined position,needles and means for supporting the same and mechanism adapted to passthrough theeyes of said needles and engage the ends of said cord anddraw the same through the eyes of said needles.

6. In a machine of the class described, a hook and means for mountingthe same so that it has a reciprocating movement, means for passing acord at an angle to the direction of movement of said'hoolr and so thatit can be engaged bysaid hook, means for forcing said cord intoengagement with said hook and means for severing said cord.

7. In a machine of the class described, needle mechanism, means formounting a cord, a severing device, one means for feeding said cord tosaid severing device, another means for drawing said cord from saidsevering device in the direction of its original movement, means forfurther moving said cord at right langles to the direction of itsoriginal movement to form a loop, and threading devices that engage theends of the severed cord and thread the needle mechanism therewith.

8. In a machine of the class described, means for supporting the cordand means for severing said cord so that said cord will hang with itsends adjacent, threading .mechanism, and means for moving said ends ofsaid cord into suitable positions to be engaged by said threadingmechanism.

9. In a machine of the character described, the combination with a pairof needles having eyes, of means for automatically presenting both endsof a cord to the eyes of the needles and causing said ends to pass eachin a longitudinal direction through one of said eyes only.

10. In a machine of the character set forth, the combination with a pairof needles having eyes, of means for severing a cord into lengths, and apair of threading devices, one device operating through the eye of eachneedle and engaging one end only of each severed length to thread thesame through such needle.

11. In a machine of the character described, the combination with a pairof needles having eyes, of threading means that pass through the needleeyes, and means for automatically presenting both ends of a cord to thethreading means.

12. In a machine of the character described, the combination with a pairof needles having eyes, of threading devices that respectively passthrough the needle eyes, means for severing a cord into successivelengths, and means for engaging both ends of each length with thethreading devices.

13. In a machine of the character described, the combination with needlemechanism, of mechanism for forming a cord into a loop, and mechanismother than thev loop forming-means for threading both ends of the loopafter it-s formation in the needle mechanism.

14. In a machine of the character described, lthe combination with apair of needleshaving eyes, of means for automatically forming a cordinto a loop with the ends thereof respectively adjacent to the needleeyes, and means other than the loop forming means for passing both Ofsaid ends of said loop after its formation through said eyes.

15. In a machine of the character set forth, the combination withneedles having eyes, of means for forming a loop in one 270 end of acord, means for severing the cord at the end of the loop, means forpassing both ends of the cord through the needle eyes, and operatingmechanism that first actuates the severing means and afterward actuatesthe threading means.

16. In a machine of the character set forth, the combination with needlemechanism, of looping mechanism, means for engaging a cord with thelooping mechanism and holding the same while the loop is being formedthereby and then releasing it, means for severing the cord, and meansfor threading the severed loop into the needle mechanism.

17.v In a machine of the character set forth, the combination withneedle mechanism, of looping mechanism, means for engaging' a cord withthe looping mechanism and holding the same while the loop is beingformed thereby and then releasing it, means for severing the cord, meansfor threading t-he severed loop into the needle mechanism, andlmeansfor' afterward moving the needle mechanism and looping mechanismsimultaneously. y

18. In a machine of the character set forth, the combination with meansfor grasping the end of a cord, of means engaging the cord between itsends and being movable relatively to the cord grasping means for movingsaid cord to determine the length of a section thereof while the end isso grasped, means for severing the section from the cord, needlemechanism, and means for threading the needle mechanism with saidsection, and operating means for actuating first the severing mechanismand afterward the threading mechanism.

19. In a machine of the character set forth, the combination with meansfor grasping and holding the end of a cord, means engaging the cordbetween its ends and while so held, for forming a loop therein, meansfor severing the looped section, needles, means for threading theneedles with the ends of the severed looped section, and operatingmechanism for successively actuating the loop-forming means, thesevering means and the threading means in the order named.

20. In a machine of the character set forth, the combination withcord-holding means, of means for grasping and holding the end of a cord,means operating transversely of the cord for forming a loop in the same,while the end is so held, means for severing the loop from the cord,needles, means for threading the ends of the loop into the needles, andmeans for advancing the severed end of the cord to the grasping andholding means.

2l. In a machine of the character set forth, the combination with meansfor holding one end of. a cord, of means operating transversely of thecord to form a section thereof into a loop, means for severing the otherend of the loop from the cord, needles, means for simultaneouslythreading botn needles with both ends of the cord after each severance,and o-perating mechanism for successively actuating the loop-formingmeans, the severing means and the threading means in the order named.

22. In a machine of the character set forth, the combination with meansfor feeding a cord longitudinally, of means for grasping and holding theend of the cord so fed, means for moving the cord trans- Versely andforming the same into a loop, means for severing the loop, a pair ofneedles, threading devices that pass through the needle eyes, and meansfor engaging the ends of the cord with the threading devices.

23. In a machine of the character set forth, the combination withneedles and threading mechanism therefor, of a cord holder, a pair ofcord grasping devices, means for causing one of the devices to of meansfor presenting the ends of a cord to the needle eyes, and oppositelymoving means for engaging and causing said ends to pass through therespective eyes in opposite directions.

25. In a machine of the character set forth, the combination with spacedneedles, of means for presenting the ends of a cord between the needleeyes, and oppositely moving means for engaging and causing said ends topass outwardly in opposite directions through the respect-ive eyes.

Signed at the city, county and State of New York, this 24th day ofJanuary, 1910.

SAMUEL COHN. Witnesses: t

GUsTAvE I. ARoNow, H. RADZINSKY.

Copies of thispatent may be obtained for ve cents each, by addressingthe Commissioner of Patentsy Washington, D. C.

